Grinding device for preparing tailing-based cementing material

Abstract

The utility model discloses a grinding device for preparing a tailing-based cementing material. The ball mill comprises a grinding cylinder and at least two bearing seats, shaft necks of the grinding cylinder are connected to the two bearing seats respectively, a driving device for driving the grinding cylinder to rotate is assembled at one end of the grinding cylinder, the ball mill further comprises a feeding hopper for feeding materials into a ball mill body, one end of the feeding hopper is communicated with one shaft neck of the grinding cylinder, and the other end of the feeding hopper is communicated with the other shaft neck of the grinding cylinder. A sealing cover is covered on the other end in an openable manner; a breather pipe is fixedly arranged on the other shaft neck of the grinding cylinder, and an inert gas device is assembled on the breather pipe; a discharging opening is formed in the side wall of the grinding cylinder, and the discharging cover covers the discharging opening in an openable and closable manner; according to the device in the scheme, tailing materials are ground in the inert gas environment, metal sulfide is prevented from making contact with oxygen to generate an oxidation reaction, the oxygen content in the ball mill can be reduced due to the existence of the inert gas, and therefore the occurrence probability of the oxidation reaction is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of preparation of tailings-based gel materials, in particular to an abrasive device for preparing tailings-based gel materials. Background Art

[0002] Tailings-based cementitious materials are made primarily from tailings. Tailings are waste generated during the mineral processing process. Their accumulation not only consumes land resources but also poses a significant environmental and ecological risk. Therefore, converting tailings into useful cementitious materials not only maximizes their resource utilization but also helps address environmental and ecological issues.

[0003] In the preparation process of tailings-based gel materials, the most important processing step is the grinding of the tailings. At present, dry ball mills are usually used to grind certain tailings containing special components. One end of the dry ball mill is a feed port, and the other end is a discharge port. The feed port and the discharge port are connected, and are connected to the outside air. When grinding certain tailings containing special components, the material in the ball mill will also come into contact with the outside air; certain components in the tailings (such as metal sulfides) generate high temperatures during the grinding process, which may accelerate the oxidation reaction with oxygen in the air to generate oxides or other compounds. If they are oxidized during the grinding process, the final product may undergo qualitative changes and unstable performance. Utility Model Content

[0004] In view of the problems existing in the above-mentioned prior art, the present invention provides an abrasive device for preparing tailings-based gelled materials, which can effectively solve the problems existing in the above-mentioned prior art.

[0005] The technical solution of the utility model is:

[0006] According to one aspect of the present invention, the present invention comprises: a grinding drum and at least two bearing seats, wherein the journals of the grinding drum are respectively connected to the two bearing seats, one end of the grinding drum is equipped with a driving device for rotating the grinding drum, and further comprises a feed hopper for allowing material to enter the ball mill body, one end of the feed hopper is connected to one of the journals of the grinding drum, and the other end is openably covered with a sealing cover; the other journal of the grinding drum is fixed with a vent pipe, and the vent pipe is equipped with an inert gas device;

[0007] The side wall of the grinding cylinder is provided with a discharge port, and further comprises a discharge cover, which is openably and closably covered on the discharge port.

[0008] Furthermore, the journal includes a first journal and a second journal; the vent pipe is connected to the first journal, and an air pump is installed between the vent pipe and the inert gas device.

[0009] Furthermore, it also includes a feed pipe, one end of which is connected to the feed hopper, and the other end is fixedly arranged on the second journal at an angle, and the feed end of the feed pipe is higher than the discharge end.

[0010] Furthermore, it also includes a bracket for supporting the feed hopper, and the feed hopper is fixed to the bracket.

[0011] Furthermore, the bracket includes a plurality of first support rods and a plurality of second support rods, and the plurality of first support rods are respectively fixed around the bracket;

[0012] A plurality of the second support rods form a closed frame, and the frame is transversely embedded between the plurality of the first support rods.

[0013] Furthermore, a convex edge is provided around the discharge port extending into the grinding cylinder, and a mounting groove is formed between the convex edge and the side wall of the grinding cylinder; and a plurality of fasteners are also included, and the discharge cover is fixed to the mounting groove by the plurality of fasteners.

[0014] Furthermore, the fastener is a bolt.

[0015] Furthermore, it also includes an inclined plate. The inner wall of the grinding cylinder is fixedly provided with an inclined plate, and the inclined surface of the inclined plate gradually inclines toward the discharge port.

[0016] Furthermore, the driving device includes a motor, a reducer, a clutch, a brake and a gear set.

[0017] Furthermore, the gas of the inert gas device is nitrogen.

[0018] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0019] First, the device in this solution grinds the tailings material in an inert gas environment, preventing oxidation reactions between the metal sulfides and oxygen. This also prevents chemical reactions between the various materials when mixed due to moisture and oxygen in the air. This helps preserve the original properties of the metal sulfides and prevents their deterioration due to oxidation. The presence of inert gas reduces the oxygen content in the ball mill, thereby reducing the likelihood of oxidation reactions.

[0020] Secondly, the inclined plate allows the ground tailings to slide more smoothly along the plate to the discharge port, reducing the material's residence time within the grinding drum and improving discharge efficiency. This helps speed up the production process and improve overall production efficiency. The inclined plate helps the material to be fully ground within the grinding drum. Due to the guiding effect of the inclined plate, the material can more frequently contact and collide with the grinding media, thereby improving the grinding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 ;

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0025] Figure 4 This is an enlarged structural diagram of point A in the present utility model;

[0026] In the figure: ball mill body 1, grinding cylinder 11, inclined plate 12, mounting groove 13, flange 14, discharge port 15, bearing seat 2, vent pipe 3, air pump 4, feed hopper 5, sealing cover 51, feed port 52, feed pipe 6, bracket 7, first support rod 71, second support rod 72, fastener 8, discharge cover 9. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be noted that the following examples are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. Similarly, the following examples are merely partial embodiments of the present invention and are not intended to be exhaustive. All other embodiments derived by persons of ordinary skill in the art without inventive effort are intended to fall within the scope of protection of the present invention.

[0028] like Figures 1 to 4 As shown, this solution provides an abrasive device for preparing tailings-based gelled materials.

[0029] See Figures 1 to 4The ball mill body 1 includes: a grinding cylinder 11 and at least two bearing seats 2. The shaft necks of the grinding cylinder 11 are respectively connected to the two bearing seats 2. One end of the grinding cylinder 11 is equipped with a driving device 10 for rotating it. The driving device 10 includes but is not limited to a motor, a reducer, a clutch, a brake and a gear set. The working principle of the driving device 10 is a conventional technical means well known to those skilled in the art, and its principle will not be described in detail here. It also includes a feed hopper 5 for allowing materials to enter the ball mill body 1. One end of the feed hopper 5 is connected to one of the shaft necks of the grinding cylinder 11, and the other end is covered with a sealing cover 51 that can be opened and closed; the sealing cover 51 is connected to the feed hopper 5 by a hinge (not shown), and the shaft necks include a first shaft neck 16 and a second shaft neck 17; it also includes a feed pipe 6, one end of the feed pipe 6 is connected to the feed hopper 5, and the other end is fixedly fixedly fixedly to the second shaft neck 17 at an angle. The feed end of the feed pipe 6 is higher than the discharge end. This facilitates the entry of materials into the grinding cylinder 11.

[0030] See Figure 1 and Figure 2 , further comprising a bracket 7 for supporting the feed hopper 5, the feed hopper 5 being fixed to the bracket 7. The bracket 7 includes a plurality of first support rods 71 ​​and a plurality of second support rods 72, with the plurality of first support rods 71 ​​being fixedly disposed around the periphery of the bracket 7. In this embodiment, there are four first support rods 71, each fixedly disposed around the periphery of the feed hopper 5. The plurality of second support rods 72 form a closed frame, which is laterally embedded between the plurality of first support rods 71. In this embodiment, the plurality of second support rods 72 form two sets of frames, each of which is fixedly disposed between the four first support rods 71.

[0031] See Figures 1 to 3 A vent pipe 3 is fixed to the other journal of the grinding cylinder 11. This vent pipe 3 is equipped with an inert gas device. The vent pipe 3 is connected to the first journal 16. An air pump 4 is installed between the vent pipe 3 and the inert gas device (not shown). Preferably, the inert gas is nitrogen. The air pump provides power to supply the nitrogen into the grinding cylinder 11.

[0032] See Figure 3 and Figure 4 The grinding cylinder 11 has a discharge port 15 on its sidewall and a discharge cover 9 that can be opened and closed to cover the discharge port 15. A flange 14 extends around the discharge port 15 toward the inside of the grinding cylinder 11. The flange 14 and the sidewall of the grinding cylinder 11 form a mounting groove 13. The grinding cylinder 11 also includes a plurality of fasteners 8, which secure the discharge cover 9 to the mounting groove 13. The fasteners 8 are bolts.

[0033] See Figure 3, also includes an inclined plate 12, the inner wall of the grinding cylinder 11 is fixed with an inclined plate 12, and the inclined surface of the inclined plate 12 gradually tilts toward the discharge port 15. The inclined plate 12 allows the ground tailings material to slide more smoothly along the inclined plate 12 to the discharge port 15, reducing the residence time of the material in the grinding cylinder 11, thereby improving the discharge efficiency. This helps to speed up the production process and improve overall production efficiency. The inclined plate 12 helps the material to be fully ground in the grinding cylinder 11. Due to the guiding effect of the inclined plate 12, the material can contact and collide with the grinding medium (such as steel balls) more frequently, thereby improving the grinding effect.

[0034] Working principle: Open the sealing cover 51, put the grinding medium (such as steel balls) into the feed hopper 5, and then put the tailings material (not shown) into the feed hopper 5. The grinding medium and tailings material enter the grinding cylinder 11 through the feed pipe 6. Start the air pump 4, and nitrogen enters the grinding cylinder 11 through the vent pipe 3. The air in the grinding cylinder 11 is discharged out of the grinding cylinder 11 through the feed pipe 6 and the feed port 52. After the air in the grinding cylinder 11 is discharged, close the sealing cover 51 and the air pump 4, start the driving device 10, and the driving device 10 drives the grinding cylinder 11 to rotate;

[0035] After the tailings material is ground, the drive device 10 is turned off, the discharge cover 9 is opened, and the drive device 10 is started again to rotate the grinding cylinder 11 until the discharge port 15 faces downward. The drive device 10 is turned off, and the steel balls and tailings material are discharged from the discharge port 15.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An abrasive device for preparing tailings-based gelled materials, comprising: A grinding cylinder (11) and at least two bearing seats (2), wherein the journals of the grinding cylinder (11) are respectively connected to the two bearing seats (2), and one end of the grinding cylinder (11) is equipped with a driving device (10) for rotating the grinding cylinder. The grinding cylinder (11) is characterized in that it also includes a feed hopper (5) for allowing materials to enter the ball mill body (1), one end of the feed hopper (5) is connected to one of the journals of the grinding cylinder (11), and the other end is covered with a sealing cover (51) that can be opened and closed; a vent pipe (3) is fixed to the other journal of the grinding cylinder (11), and the vent pipe (3) is equipped with an inert gas device; The grinding cylinder (11) is provided with a discharge port (15) on its side wall and further comprises a discharge cover (9), wherein the discharge cover (9) is openably and closably arranged to cover the discharge port (15).

2. The abrasive device for preparing tailings-based gelled materials according to claim 1, wherein: The journal comprises a first journal (16) and a second journal (17); the vent pipe (3) is connected to the first journal (16); and an air pump (4) is installed between the vent pipe (3) and the inert gas device.

3. The abrasive device for preparing tailings-based gelled materials according to claim 2, wherein: It also includes a feed pipe (6), one end of which is connected to the feed hopper (5), and the other end is fixedly arranged on the second journal (17) at an angle, and the feed end of the feed pipe (6) is higher than the discharge end.

4. The abrasive device for preparing tailings-based gelled materials according to claim 3, wherein: It also includes a bracket (7) for supporting the feed hopper (5), and the feed hopper (5) is fixed to the bracket (7).

5. The abrasive device for preparing tailings-based gelled materials according to claim 4, characterized in that: The bracket (7) comprises a plurality of first support rods (71) and a plurality of second support rods (72), wherein the plurality of first support rods (71) are respectively fixed around the bracket (7); A plurality of the second support rods (72) form a closed frame, and the frame is transversely embedded between a plurality of the first support rods (71).

6. The abrasive device for preparing tailings-based gelled materials according to claim 1, wherein: The discharge port (15) is provided with a convex edge (14) extending toward the inside of the grinding cylinder (11) on all sides, and the convex edge (14) and the side wall of the grinding cylinder (11) form a mounting groove (13); and further comprises a plurality of fasteners (8), and the discharge cover (9) is fixed to the mounting groove (13) by the plurality of fasteners (8).

7. The abrasive device for preparing tailings-based gelled materials according to claim 6, characterized in that: The fastener (8) is a bolt.

8. The abrasive device for preparing tailings-based gelled materials according to claim 1, characterized in that: It also includes an inclined panel (12). The inner wall of the grinding cylinder (11) is fixedly provided with the inclined panel (12), and the inclined surface of the inclined panel (12) gradually inclines toward the discharge port (15).

9. The abrasive device for preparing tailings-based gelled materials according to claim 1, wherein: The driving device (10) comprises a motor, a reducer, a clutch, a brake and a gear set.

10. The abrasive device for preparing tailings-based gelled materials according to claim 1, characterized in that: The gas of the inert gas device is nitrogen.

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